Serverless Framework - Lambda to call another lambda without being through API Gateway

Question

I'm building the following architecture: a user posts a string to API Gateway, which in turn calls a Lambda function - using that string as input. This Lambda function writes the string to DynamoDB. After that, this Lambda function calls another Lambda function passing as input the id of the item inserted into DynamoDB, and returns a 200 status code.

To call the second Lambda function I use:

payload = {"id":item['id']}
invoke_lambda = lambda_client.invoke(FunctionName="process",
                                     InvocationType="Event",
                                     Payload=json.dumps(payload))

How should I configure serverless.yml for the second Lambda in order for it not to use API gateway? I don't want to use API Gateway because it limits the Lambda to finish in 30 seconds.

For instance, to use API Gateway, I would just do this:

functions:
  process:
    events:
      - http: ANY /
      - http: 'ANY {proxy+}'

What's the alternative to that?

Deiv · Accepted Answer · 2019-03-29 16:52:36Z

1

As long as your second Lambda function isn't attached to the API gateway then it won't be limited by anything.

So you can simply not include the "events" property in the second Lambda definition (it's an optional parameter)

answered Mar 29, 2019 at 16:52

Deiv

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1 Comment

Stargazer Over a year ago

Actually, even if a function is attached to an API Gateway, you can still invoke it directly.

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